What is a travel day?
A travel day is a 24 hour period within which you can travel on trains with your Eurail Pass. It lasts from 12:00 a.m. (midnight) to 11:59 p.m. on the same calendar day. On each travel day, you have access to the train networks where your Eurail Pass is valid.
The 7 p.m. rule
The 7 p.m. rule allows you to count only 1 travel day instead of 2 when traveling overnight. This is how it works: if you travel on a train (or multiple trains) that departs after 7 p.m. (19:00) and arrives at its final stop after 4 a.m. (04:00), you only need to enter the arrival date in the travel calendar, even if you leave the train before 4 a.m. This way you get 5 hours of travel for free. This is known as the 7 p.m. rule.
The ÖBB Nightjet between Rome and Munich/Vienna, leaving at 18:58, is also included in the 7 p.m. rule.
Let us give you an example...
Say that your night train departs on a Monday at 19:15 and arrives at its final destination Tuesday at 10:00. You leave the train at 03:00 on Tuesday morning. In this case, you only need to use one travel day – the day of your arrival. You can continue using your Eurail Pass until the end of that travel day (in this case Tuesday, 23:59).